1340896557 has 128 divisors (see below), whose sum is σ = 2570158080. Its totient is φ = 598752000.

The previous prime is 1340896553. The next prime is 1340896559. The reversal of 1340896557 is 7556980431.

It is not a de Polignac number, because 1340896557 - 2² = 1340896553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340896553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4050882 + ... + 4051212.

It is an arithmetic number, because the mean of its divisors is an integer number (20079360).

Almost surely, 2^1340896557 is an apocalyptic number.

It is an amenable number.

1340896557 is a deficient number, since it is larger than the sum of its proper divisors (1229261523).

1340896557 is a wasteful number, since it uses less digits than its factorization.

1340896557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 1340896557 is about 36618.2544231699. The cubic root of 1340896557 is about 1102.7195948863.

The spelling of 1340896557 in words is "one billion, three hundred forty million, eight hundred ninety-six thousand, five hundred fifty-seven".